jaybertx
Member
Thanks for the weekly updates Doug aka yellowV6sport !
I love this kind of info... keep it coming!
+1!!
Thanks for the weekly updates Doug aka yellowV6sport !
I love this kind of info... keep it coming!
If you are out on the highway quite a bit doing 55+ MPH in O.D., then you probably are going to loose a little mileage as the engine is obviously turning a little faster ...
3.31 std = 26 MPG
3.55 opt = 24.3 MPG (@ 7.3% higher RPM)
3.73 opt = 23.1 MPG (@ 12.7% higher RPM)
... will the MPG's drop the same % as the RPM increase as I've listed ?? Doubtfull, but you can probably use the RPM difference as a worst case senerio.
My car so far is an example of the oposite ... the EPA HWY estimate for a base V6 w/ 225 wide rubber is 29 MPG. I've got a heavier Premium model w/ MCA pkg that comes with the wider 235 performance tires (that are std on the GT) and figured I too would take a slight MPG hit. However, I have already gotten 28.8, 29.1, & 30.89 MPG and my commute is only 85% highway. Car is not completly broken in yet, so it's quite possible it may continue getting a little better.
The point is, the EPA numbers appear to be conservative and BEATABLE so maybe you can realistically get a couple MPG better than EPA with the base 3.31's and close to 25-26 HWY with 3.73's in a GT.
Doug
Very good info, I was wonering about that. I'm still only getting 18-20, but thats just a couple tanks, not very happy yet though, hopefully it gets better, thats with the 3:55's also.
Another question is what grade of fuel everyone is using. The engine will burn anything, but it has a higher power output using premium. Which grade gives the best mileage?
Hey Doug,
Just curious, Why avoid the ethanol?
Here we have some gases that have close to 10% ethanol.
-Ted
Ethanol reduces MPG and is generally NOT GOOD for gasoline powered vehicles or portable outdoor equipment.
All newer vehicles are designed to operate on E10 (10% ethanol), but it can create problems in vehicles that do not get driven a lot as it absorbs moisture and can separate from the gasoline.
Older vehicle fuel systems were NOT designed for ethanol use and it can damage older fuel hoses as well as seals & gaskets throughout the fuel system especially on vehicles that are not driven frequently.
Doug